title: Parity effects in few-layer graphene.
abstract: We study the electronic properties in few-layer graphenes (FLGs) classified by even/odd layer number n. FLGs with even n have only parabolic energy dispersions, whereas FLGs with odd n have a linear dispersion besides parabolic ones. This difference leads to a distinct density of states in FLGs, experimentally confirmed by the gate-voltage dependence of the electric double-layer capacitance. Thus, FLGs with odd n are unique materials that have relativistic carriers originating in linear energy dispersion.
authors.affiliation: Research Laboratory for Surface Science, Okayama University , Okayama 700-8530, Japan.
authors.forename: Hidenori
authors.initials: H
authors.lastname: Goto
authors.forename: Eri
authors.initials: E
authors.lastname: Uesugi
authors.forename: Ritsuko
authors.initials: R
authors.lastname: Eguchi
authors.forename: Yoshihiro
authors.initials: Y
authors.lastname: Kubozono